Dr. Lenny
Breast Augmentation · Guide

Breast Implant Placement: Over or Under the Muscle

Should your implants sit over the chest muscle or under it? It’s the question that stirs up the most confusion in a breast augmentation consultation, and there’s no single right answer. The best placement follows from your body, your goals, and how you live. Here’s what Dr. Roudner walks through with every patient.

Why There’s No One Answer

The most common source of confusion about breast implants is where they sit, above the muscle or below it. There’s no clear-cut yes or no a surgeon can hand you, because every body is different. The right placement follows from your anatomy, the amount of breast tissue you start with, and what you want the result to look like. Dr. Roudner reviews all of it with you during a personalized consultation; the overview here is meant to help you walk in already understanding your options.

The Placement Options

Surgeons use several terms for placement, which is part of what makes the subject confusing. Implants set above the muscle are known as “overs,” or sub-glandular placement. When the implant sits partly below the muscle, it’s called a dual-plane or partial sub-muscular placement. Implants positioned completely beneath the chest muscle are “unders,” or complete sub-muscular placement. A fourth option, sub-fascial placement, sets the implant between the muscle and the fascia, the thick layer of tissue covering it, a more involved technique that few surgeons offer.

What Placement Affects

Placement isn’t only about how the breast looks on day one. It influences several things worth weighing before you decide:

Capsular Contracture

Placing the implant partly or fully under the muscle is thought to lower the rate of this scar-tissue tightening.

Rippling

Muscle over the implant adds padding that can soften visible rippling, which helps when you begin with minimal breast tissue.

Mammograms

You’ll still need routine mammograms; a behind-the-muscle implant leaves breast tissue clearer to read on imaging.

Sagging Over Time

Implants set under the muscle may carry more support and sag less as the years pass.

Matching Placement to Your Body

Think of the following as a guide for your conversation with Dr. Roudner rather than medical advice on its own. If you have enough breast tissue to fully cover an implant, an over-the-muscle placement can still look natural. If you have little tissue, or want to go larger than your natural size, setting the implant partly or fully behind the muscle tends to read as more natural. Patients who keep body-building may see some distortion, particularly with implants behind the muscle. And if your breasts already sag, a lift at the same time is often the better path, otherwise an implant placed behind the muscle can align with the chest wall rather than the breast tissue. For most patients, a partial or complete under-the-muscle placement is the usual recommendation, but your body, your goals, and your lifestyle make the final call.

Frequently asked questions

Over or under the muscle, which is better?

There’s no universal answer. For most patients Dr. Roudner finds a partial or complete under-the-muscle placement works best, but your anatomy, your goals, and how you live ultimately decide. It’s a conversation, not a formula.

Will I still need mammograms after breast augmentation?

Yes. Regular mammograms stay part of your routine yearly exams. Placing the implant partly or fully below the chest muscle helps keep your breast tissue clear to read on imaging.

Does implant placement affect sagging later on?

It can. Implants set on top of the muscle are thought more likely to sag with age, while placing them partially or fully behind the muscle can give the implant more support over time.

What is capsular contracture, and does placement change the risk?

Capsular contracture is the tightening and shrinking of the scar tissue that naturally forms around an implant. Clinical findings suggest a partial or complete below-the-muscle placement can significantly lower how often it happens, though no placement rules it out entirely.

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Meet Dr. Lenny · The Surgeon

The name Miami trusts to keep it natural.

For more than three decades, Dr. Leonard A. Roudner has built a singular reputation across South Florida: breast surgery that reads unmistakably natural, and an unhurried chair-side manner the editors, executives, and public figures in his Coral Gables waiting room have come to expect.

Board-Certified Plastic Surgeon. Diplomate of the American Board of Plastic Surgery. Member of ASPS and ASAPS, with hospital privileges at Baptist Hospital and South Miami Hospital. Since founding the Aesthetic Surgery Center in Coral Gables in 1989, Dr. Lenny has devoted his career to one pursuit: natural, beautiful breast surgery, and the personal, unhurried care behind every result.

30,000+
Breast augmentations · Since 1989
American Society of Plastic SurgeonsAmerican Society for Aesthetic Plastic SurgeryAmerican Board of Plastic Surgery
Dr. Leonard A. Roudner at the Aesthetic Surgery Center in Coral Gables
Board-Certified · Est. 1989
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